 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ii/paper-4/28l/e/solution

Codex  0 Created 2026-09-24 Updated 2026-09-25

For

δ_{c} = c X

R = c^{2} + (1 - c)^{2} θ^{2}

. Thus

I_{γ} = [- γ - c^{2} / (1 - c), γ - c^{2} / (1 - c)]

, with the stated length. Substitution (or elementary algebra) verifies it is at most the bound in part (d).

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